Computational Wavefield Sensing

With the advent of faster computer processors, alternative methods of wavefield sensing have been developed throughout the past decades. In contrast to standard interferometry, these methods aim at solving an inverse problem , whereby the recorded intensities are interpreted as an effect caused by the underlying (unknown) wavefield when subjected to different manipulations. In contrast to holography and interferometry it is not possible to use film as a recording material and to optically reconstruct the wavefield. In fact, it is even pertinent to say that the numerical task of solving the inverse problem is an essential and integral part of the measurement process.